#include <iostream>
#include <cstdlib>
using namespace std;

int main()
{

	cout << "How many rows of boxes (e.g., 10)? ";
	int nrows {0};
	cin >> nrows;

        if (!cin) {
                cerr << "Sorry, that wasn't a number.\n";
                return EXIT_FAILURE;
        }

	cout << "How many columns of boxes (e.g., 10)? ";
	int ncols {0};
	cin >> ncols;

        if (!cin) {
                cerr << "Sorry, that wasn't a number.\n";
                return EXIT_FAILURE;
        }

        cout << "How many rows of blanks in each box (e.g., 1)? ";
        int brows {0};
        cin >> brows;

        if (!cin) {
                cerr << "Sorry, that wasn't a number.\n";
                return EXIT_FAILURE;
        }

        cout << "How many columns of blanks in each box (e.g., 3)? ";
        int bcols {0};
        cin >> bcols;

        if (!cin) {
                cerr << "Sorry, that wasn't a number.\n";
                return EXIT_FAILURE;
        }

	for (int r {0}; r < nrows; ++r) {

		for (int c {0}; c < ncols; ++c) {
			cout << "+";
			
			for (int bc {0}; bc < bcols; ++bc) {
				cout << "-";
			}
		}
		cout << "+\n";

		for (int br {0}; br < brows; ++br) {
			for (int c {0}; c < ncols; ++c) {
				cout << "|";
				
				for (int bc {0}; bc < ncols; ++bc) {
					cout << " ";
				}
			}
			cout << "|\n";
		}
	}

	for (int c {0}; c < ncols; ++c) {
		cout << "+";
		for (int bc {0}; bc < ncols; ++bc) {
			cout << "-";
		}
	}
	cout << "+\n";

	
	return EXIT_SUCCESS;
}